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Scott, are you attempting to use one TR-4C as a transmitter and another as a receiver such that one can control the other when necessary or desired? The answer is that won't work without some reengineering and interfacing. There is no reason to use two transceivers in your proposed setup. Purchase the external, remote VFO, RV-4C. It allows the transceiver or the RV-4C to control either the transmit frequency or the receive frequency for listening to a DX station and transmitting in the pileup frequency or two separate simplex frequencies in the same band. I hope that helps. 73, Bob Loving K9JU Maryville, TN
On Wednesday, January 22, 2025 at 05:57:08 PM EST, Steve Wedge, W1ES/4 via groups.io <w1es@...> wrote:
Hey, Scott, You can¡¯t transceive with a TR-4(any) and an R-4(any) because the two radios use different IF¡¯s and different frequency mixing scheme.? The receivers use A 5645 kHz IF, whilst the transceivers use a 9 MHz IF. ? You can¡¯t synch these together without some truly complex interfacing that would be a technical nightmare.? The main reason for implementing space for a separate receiver was to allow those who want it to use separate receivers that have more features. ? You can¡¯t synch these use, for example, an R-4C with a TR-4C and get notch, narrow filters, passband tuning, etc. the fly in the ointment is that you must run them as separates.? Personal note: once I got hooked on DXing on CW, my Swan 500 had a horrible receiver for that purpose. I used an R-4A with the Swan and a Johnson TR Switch. This worked for about a year, when I finally bought my first C Line.? As the Four Yorkshiremen said, ¡°Looxury!¡± Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent from for iOS On Wed, Jan 22, 2025 at 17:40, Scott N1IA via groups.io <soakland5@...> wrote:
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